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Theorem gsumhashmul 33046
Description: Express a group sum by grouping by nonzero values. (Contributed by Thierry Arnoux, 22-Jun-2024.)
Hypotheses
Ref Expression
gsumhashmul.b 𝐵 = (Base‘𝐺)
gsumhashmul.z 0 = (0g𝐺)
gsumhashmul.x · = (.g𝐺)
gsumhashmul.g (𝜑𝐺 ∈ CMnd)
gsumhashmul.f (𝜑𝐹:𝐴𝐵)
gsumhashmul.1 (𝜑𝐹 finSupp 0 )
Assertion
Ref Expression
gsumhashmul (𝜑 → (𝐺 Σg 𝐹) = (𝐺 Σg (𝑥 ∈ (ran 𝐹 ∖ { 0 }) ↦ ((♯‘(𝐹 “ {𝑥})) · 𝑥))))
Distinct variable groups:   𝑥, 0   𝑥,𝐴   𝑥,𝐵   𝑥,𝐹   𝑥,𝐺   𝜑,𝑥
Allowed substitution hint:   · (𝑥)

Proof of Theorem gsumhashmul
Dummy variables 𝑡 𝑢 𝑣 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 gsumhashmul.f . . . . . . 7 (𝜑𝐹:𝐴𝐵)
2 suppssdm 8200 . . . . . . . 8 (𝐹 supp 0 ) ⊆ dom 𝐹
32, 1fssdm 6755 . . . . . . 7 (𝜑 → (𝐹 supp 0 ) ⊆ 𝐴)
41, 3feqresmpt 6977 . . . . . 6 (𝜑 → (𝐹 ↾ (𝐹 supp 0 )) = (𝑥 ∈ (𝐹 supp 0 ) ↦ (𝐹𝑥)))
54oveq2d 7446 . . . . 5 (𝜑 → (𝐺 Σg (𝐹 ↾ (𝐹 supp 0 ))) = (𝐺 Σg (𝑥 ∈ (𝐹 supp 0 ) ↦ (𝐹𝑥))))
6 gsumhashmul.b . . . . . 6 𝐵 = (Base‘𝐺)
7 gsumhashmul.z . . . . . 6 0 = (0g𝐺)
8 gsumhashmul.g . . . . . 6 (𝜑𝐺 ∈ CMnd)
9 gsumhashmul.1 . . . . . . . 8 (𝜑𝐹 finSupp 0 )
10 relfsupp 9400 . . . . . . . . 9 Rel finSupp
1110brrelex1i 5744 . . . . . . . 8 (𝐹 finSupp 0𝐹 ∈ V)
129, 11syl 17 . . . . . . 7 (𝜑𝐹 ∈ V)
131ffnd 6737 . . . . . . 7 (𝜑𝐹 Fn 𝐴)
1412, 13fndmexd 7926 . . . . . 6 (𝜑𝐴 ∈ V)
15 ssidd 4018 . . . . . 6 (𝜑 → (𝐹 supp 0 ) ⊆ (𝐹 supp 0 ))
166, 7, 8, 14, 1, 15, 9gsumres 19945 . . . . 5 (𝜑 → (𝐺 Σg (𝐹 ↾ (𝐹 supp 0 ))) = (𝐺 Σg 𝐹))
17 nfcv 2902 . . . . . 6 𝑥(𝐹‘(1st𝑧))
18 fveq2 6906 . . . . . 6 (𝑥 = (1st𝑧) → (𝐹𝑥) = (𝐹‘(1st𝑧)))
199fsuppimpd 9406 . . . . . 6 (𝜑 → (𝐹 supp 0 ) ∈ Fin)
20 ssidd 4018 . . . . . 6 (𝜑𝐵𝐵)
211adantr 480 . . . . . . 7 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → 𝐹:𝐴𝐵)
223sselda 3994 . . . . . . 7 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → 𝑥𝐴)
2321, 22ffvelcdmd 7104 . . . . . 6 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → (𝐹𝑥) ∈ 𝐵)
241ffund 6740 . . . . . . . . 9 (𝜑 → Fun 𝐹)
25 funrel 6584 . . . . . . . . 9 (Fun 𝐹 → Rel 𝐹)
26 reldif 5827 . . . . . . . . 9 (Rel 𝐹 → Rel (𝐹 ∖ (V × { 0 })))
2724, 25, 263syl 18 . . . . . . . 8 (𝜑 → Rel (𝐹 ∖ (V × { 0 })))
28 1stdm 8063 . . . . . . . 8 ((Rel (𝐹 ∖ (V × { 0 })) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → (1st𝑧) ∈ dom (𝐹 ∖ (V × { 0 })))
2927, 28sylan 580 . . . . . . 7 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → (1st𝑧) ∈ dom (𝐹 ∖ (V × { 0 })))
307fvexi 6920 . . . . . . . . . . . 12 0 ∈ V
3130a1i 11 . . . . . . . . . . 11 (𝜑0 ∈ V)
32 fressupp 32702 . . . . . . . . . . 11 ((Fun 𝐹𝐹 ∈ V ∧ 0 ∈ V) → (𝐹 ↾ (𝐹 supp 0 )) = (𝐹 ∖ (V × { 0 })))
3324, 12, 31, 32syl3anc 1370 . . . . . . . . . 10 (𝜑 → (𝐹 ↾ (𝐹 supp 0 )) = (𝐹 ∖ (V × { 0 })))
3433dmeqd 5918 . . . . . . . . 9 (𝜑 → dom (𝐹 ↾ (𝐹 supp 0 )) = dom (𝐹 ∖ (V × { 0 })))
352a1i 11 . . . . . . . . . 10 (𝜑 → (𝐹 supp 0 ) ⊆ dom 𝐹)
36 ssdmres 6032 . . . . . . . . . 10 ((𝐹 supp 0 ) ⊆ dom 𝐹 ↔ dom (𝐹 ↾ (𝐹 supp 0 )) = (𝐹 supp 0 ))
3735, 36sylib 218 . . . . . . . . 9 (𝜑 → dom (𝐹 ↾ (𝐹 supp 0 )) = (𝐹 supp 0 ))
3834, 37eqtr3d 2776 . . . . . . . 8 (𝜑 → dom (𝐹 ∖ (V × { 0 })) = (𝐹 supp 0 ))
3938adantr 480 . . . . . . 7 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → dom (𝐹 ∖ (V × { 0 })) = (𝐹 supp 0 ))
4029, 39eleqtrd 2840 . . . . . 6 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → (1st𝑧) ∈ (𝐹 supp 0 ))
4124funresd 6610 . . . . . . . . . . 11 (𝜑 → Fun (𝐹 ↾ (𝐹 supp 0 )))
4241adantr 480 . . . . . . . . . 10 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → Fun (𝐹 ↾ (𝐹 supp 0 )))
4337eleq2d 2824 . . . . . . . . . . 11 (𝜑 → (𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 )) ↔ 𝑥 ∈ (𝐹 supp 0 )))
4443biimpar 477 . . . . . . . . . 10 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → 𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 )))
45 simpr 484 . . . . . . . . . . 11 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → 𝑥 ∈ (𝐹 supp 0 ))
4645fvresd 6926 . . . . . . . . . 10 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → ((𝐹 ↾ (𝐹 supp 0 ))‘𝑥) = (𝐹𝑥))
47 funopfvb 6962 . . . . . . . . . . 11 ((Fun (𝐹 ↾ (𝐹 supp 0 )) ∧ 𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → (((𝐹 ↾ (𝐹 supp 0 ))‘𝑥) = (𝐹𝑥) ↔ ⟨𝑥, (𝐹𝑥)⟩ ∈ (𝐹 ↾ (𝐹 supp 0 ))))
4847biimpa 476 . . . . . . . . . 10 (((Fun (𝐹 ↾ (𝐹 supp 0 )) ∧ 𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) ∧ ((𝐹 ↾ (𝐹 supp 0 ))‘𝑥) = (𝐹𝑥)) → ⟨𝑥, (𝐹𝑥)⟩ ∈ (𝐹 ↾ (𝐹 supp 0 )))
4942, 44, 46, 48syl21anc 838 . . . . . . . . 9 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → ⟨𝑥, (𝐹𝑥)⟩ ∈ (𝐹 ↾ (𝐹 supp 0 )))
5033adantr 480 . . . . . . . . 9 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → (𝐹 ↾ (𝐹 supp 0 )) = (𝐹 ∖ (V × { 0 })))
5149, 50eleqtrd 2840 . . . . . . . 8 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → ⟨𝑥, (𝐹𝑥)⟩ ∈ (𝐹 ∖ (V × { 0 })))
52 eqeq2 2746 . . . . . . . . . . 11 (𝑣 = ⟨𝑥, (𝐹𝑥)⟩ → (𝑧 = 𝑣𝑧 = ⟨𝑥, (𝐹𝑥)⟩))
5352bibi2d 342 . . . . . . . . . 10 (𝑣 = ⟨𝑥, (𝐹𝑥)⟩ → ((𝑥 = (1st𝑧) ↔ 𝑧 = 𝑣) ↔ (𝑥 = (1st𝑧) ↔ 𝑧 = ⟨𝑥, (𝐹𝑥)⟩)))
5453ralbidv 3175 . . . . . . . . 9 (𝑣 = ⟨𝑥, (𝐹𝑥)⟩ → (∀𝑧 ∈ (𝐹 ∖ (V × { 0 }))(𝑥 = (1st𝑧) ↔ 𝑧 = 𝑣) ↔ ∀𝑧 ∈ (𝐹 ∖ (V × { 0 }))(𝑥 = (1st𝑧) ↔ 𝑧 = ⟨𝑥, (𝐹𝑥)⟩)))
5554adantl 481 . . . . . . . 8 (((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑣 = ⟨𝑥, (𝐹𝑥)⟩) → (∀𝑧 ∈ (𝐹 ∖ (V × { 0 }))(𝑥 = (1st𝑧) ↔ 𝑧 = 𝑣) ↔ ∀𝑧 ∈ (𝐹 ∖ (V × { 0 }))(𝑥 = (1st𝑧) ↔ 𝑧 = ⟨𝑥, (𝐹𝑥)⟩)))
56 fvexd 6921 . . . . . . . . . . . . . 14 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → (2nd𝑧) ∈ V)
5727ad3antrrr 730 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → Rel (𝐹 ∖ (V × { 0 })))
58 simplr 769 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → 𝑧 ∈ (𝐹 ∖ (V × { 0 })))
59 1st2nd 8062 . . . . . . . . . . . . . . . . 17 ((Rel (𝐹 ∖ (V × { 0 })) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → 𝑧 = ⟨(1st𝑧), (2nd𝑧)⟩)
6057, 58, 59syl2anc 584 . . . . . . . . . . . . . . . 16 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → 𝑧 = ⟨(1st𝑧), (2nd𝑧)⟩)
61 opeq1 4877 . . . . . . . . . . . . . . . . 17 (𝑥 = (1st𝑧) → ⟨𝑥, (2nd𝑧)⟩ = ⟨(1st𝑧), (2nd𝑧)⟩)
6261adantl 481 . . . . . . . . . . . . . . . 16 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → ⟨𝑥, (2nd𝑧)⟩ = ⟨(1st𝑧), (2nd𝑧)⟩)
6360, 62eqtr4d 2777 . . . . . . . . . . . . . . 15 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → 𝑧 = ⟨𝑥, (2nd𝑧)⟩)
64 difssd 4146 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → (𝐹 ∖ (V × { 0 })) ⊆ 𝐹)
6564sselda 3994 . . . . . . . . . . . . . . . . 17 (((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → 𝑧𝐹)
6665adantr 480 . . . . . . . . . . . . . . . 16 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → 𝑧𝐹)
6763, 66eqeltrrd 2839 . . . . . . . . . . . . . . 15 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → ⟨𝑥, (2nd𝑧)⟩ ∈ 𝐹)
6863, 67jca 511 . . . . . . . . . . . . . 14 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → (𝑧 = ⟨𝑥, (2nd𝑧)⟩ ∧ ⟨𝑥, (2nd𝑧)⟩ ∈ 𝐹))
69 opeq2 4878 . . . . . . . . . . . . . . . 16 (𝑦 = (2nd𝑧) → ⟨𝑥, 𝑦⟩ = ⟨𝑥, (2nd𝑧)⟩)
7069eqeq2d 2745 . . . . . . . . . . . . . . 15 (𝑦 = (2nd𝑧) → (𝑧 = ⟨𝑥, 𝑦⟩ ↔ 𝑧 = ⟨𝑥, (2nd𝑧)⟩))
7169eleq1d 2823 . . . . . . . . . . . . . . 15 (𝑦 = (2nd𝑧) → (⟨𝑥, 𝑦⟩ ∈ 𝐹 ↔ ⟨𝑥, (2nd𝑧)⟩ ∈ 𝐹))
7270, 71anbi12d 632 . . . . . . . . . . . . . 14 (𝑦 = (2nd𝑧) → ((𝑧 = ⟨𝑥, 𝑦⟩ ∧ ⟨𝑥, 𝑦⟩ ∈ 𝐹) ↔ (𝑧 = ⟨𝑥, (2nd𝑧)⟩ ∧ ⟨𝑥, (2nd𝑧)⟩ ∈ 𝐹)))
7356, 68, 72spcedv 3597 . . . . . . . . . . . . 13 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → ∃𝑦(𝑧 = ⟨𝑥, 𝑦⟩ ∧ ⟨𝑥, 𝑦⟩ ∈ 𝐹))
74 vex 3481 . . . . . . . . . . . . . 14 𝑥 ∈ V
7574elsnres 6040 . . . . . . . . . . . . 13 (𝑧 ∈ (𝐹 ↾ {𝑥}) ↔ ∃𝑦(𝑧 = ⟨𝑥, 𝑦⟩ ∧ ⟨𝑥, 𝑦⟩ ∈ 𝐹))
7673, 75sylibr 234 . . . . . . . . . . . 12 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → 𝑧 ∈ (𝐹 ↾ {𝑥}))
7713ad3antrrr 730 . . . . . . . . . . . . 13 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → 𝐹 Fn 𝐴)
7822ad2antrr 726 . . . . . . . . . . . . 13 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → 𝑥𝐴)
79 fnressn 7177 . . . . . . . . . . . . 13 ((𝐹 Fn 𝐴𝑥𝐴) → (𝐹 ↾ {𝑥}) = {⟨𝑥, (𝐹𝑥)⟩})
8077, 78, 79syl2anc 584 . . . . . . . . . . . 12 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → (𝐹 ↾ {𝑥}) = {⟨𝑥, (𝐹𝑥)⟩})
8176, 80eleqtrd 2840 . . . . . . . . . . 11 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → 𝑧 ∈ {⟨𝑥, (𝐹𝑥)⟩})
82 elsni 4647 . . . . . . . . . . 11 (𝑧 ∈ {⟨𝑥, (𝐹𝑥)⟩} → 𝑧 = ⟨𝑥, (𝐹𝑥)⟩)
8381, 82syl 17 . . . . . . . . . 10 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑥 = (1st𝑧)) → 𝑧 = ⟨𝑥, (𝐹𝑥)⟩)
84 simpr 484 . . . . . . . . . . . 12 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑧 = ⟨𝑥, (𝐹𝑥)⟩) → 𝑧 = ⟨𝑥, (𝐹𝑥)⟩)
8584fveq2d 6910 . . . . . . . . . . 11 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑧 = ⟨𝑥, (𝐹𝑥)⟩) → (1st𝑧) = (1st ‘⟨𝑥, (𝐹𝑥)⟩))
86 fvex 6919 . . . . . . . . . . . 12 (𝐹𝑥) ∈ V
8774, 86op1st 8020 . . . . . . . . . . 11 (1st ‘⟨𝑥, (𝐹𝑥)⟩) = 𝑥
8885, 87eqtr2di 2791 . . . . . . . . . 10 ((((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑧 = ⟨𝑥, (𝐹𝑥)⟩) → 𝑥 = (1st𝑧))
8983, 88impbida 801 . . . . . . . . 9 (((𝜑𝑥 ∈ (𝐹 supp 0 )) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → (𝑥 = (1st𝑧) ↔ 𝑧 = ⟨𝑥, (𝐹𝑥)⟩))
9089ralrimiva 3143 . . . . . . . 8 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → ∀𝑧 ∈ (𝐹 ∖ (V × { 0 }))(𝑥 = (1st𝑧) ↔ 𝑧 = ⟨𝑥, (𝐹𝑥)⟩))
9151, 55, 90rspcedvd 3623 . . . . . . 7 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → ∃𝑣 ∈ (𝐹 ∖ (V × { 0 }))∀𝑧 ∈ (𝐹 ∖ (V × { 0 }))(𝑥 = (1st𝑧) ↔ 𝑧 = 𝑣))
92 reu6 3734 . . . . . . 7 (∃!𝑧 ∈ (𝐹 ∖ (V × { 0 }))𝑥 = (1st𝑧) ↔ ∃𝑣 ∈ (𝐹 ∖ (V × { 0 }))∀𝑧 ∈ (𝐹 ∖ (V × { 0 }))(𝑥 = (1st𝑧) ↔ 𝑧 = 𝑣))
9391, 92sylibr 234 . . . . . 6 ((𝜑𝑥 ∈ (𝐹 supp 0 )) → ∃!𝑧 ∈ (𝐹 ∖ (V × { 0 }))𝑥 = (1st𝑧))
9417, 6, 7, 18, 8, 19, 20, 23, 40, 93gsummptf1o 19995 . . . . 5 (𝜑 → (𝐺 Σg (𝑥 ∈ (𝐹 supp 0 ) ↦ (𝐹𝑥))) = (𝐺 Σg (𝑧 ∈ (𝐹 ∖ (V × { 0 })) ↦ (𝐹‘(1st𝑧)))))
955, 16, 943eqtr3d 2782 . . . 4 (𝜑 → (𝐺 Σg 𝐹) = (𝐺 Σg (𝑧 ∈ (𝐹 ∖ (V × { 0 })) ↦ (𝐹‘(1st𝑧)))))
96 simpr 484 . . . . . . . 8 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → 𝑧 ∈ (𝐹 ∖ (V × { 0 })))
9796eldifad 3974 . . . . . . 7 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → 𝑧𝐹)
98 funfv1st2nd 8069 . . . . . . 7 ((Fun 𝐹𝑧𝐹) → (𝐹‘(1st𝑧)) = (2nd𝑧))
9924, 97, 98syl2an2r 685 . . . . . 6 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → (𝐹‘(1st𝑧)) = (2nd𝑧))
10099mpteq2dva 5247 . . . . 5 (𝜑 → (𝑧 ∈ (𝐹 ∖ (V × { 0 })) ↦ (𝐹‘(1st𝑧))) = (𝑧 ∈ (𝐹 ∖ (V × { 0 })) ↦ (2nd𝑧)))
101100oveq2d 7446 . . . 4 (𝜑 → (𝐺 Σg (𝑧 ∈ (𝐹 ∖ (V × { 0 })) ↦ (𝐹‘(1st𝑧)))) = (𝐺 Σg (𝑧 ∈ (𝐹 ∖ (V × { 0 })) ↦ (2nd𝑧))))
10295, 101eqtrd 2774 . . 3 (𝜑 → (𝐺 Σg 𝐹) = (𝐺 Σg (𝑧 ∈ (𝐹 ∖ (V × { 0 })) ↦ (2nd𝑧))))
103 nfcv 2902 . . . 4 𝑧(1st𝑡)
104 fvex 6919 . . . . 5 (2nd𝑡) ∈ V
105 fvex 6919 . . . . 5 (1st𝑡) ∈ V
106104, 105op2ndd 8023 . . . 4 (𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩ → (2nd𝑧) = (1st𝑡))
107 resfnfinfin 9374 . . . . . 6 ((𝐹 Fn 𝐴 ∧ (𝐹 supp 0 ) ∈ Fin) → (𝐹 ↾ (𝐹 supp 0 )) ∈ Fin)
10813, 19, 107syl2anc 584 . . . . 5 (𝜑 → (𝐹 ↾ (𝐹 supp 0 )) ∈ Fin)
10933, 108eqeltrrd 2839 . . . 4 (𝜑 → (𝐹 ∖ (V × { 0 })) ∈ Fin)
11033rneqd 5951 . . . . 5 (𝜑 → ran (𝐹 ↾ (𝐹 supp 0 )) = ran (𝐹 ∖ (V × { 0 })))
111 rnresss 6036 . . . . . 6 ran (𝐹 ↾ (𝐹 supp 0 )) ⊆ ran 𝐹
1121frnd 6744 . . . . . 6 (𝜑 → ran 𝐹𝐵)
113111, 112sstrid 4006 . . . . 5 (𝜑 → ran (𝐹 ↾ (𝐹 supp 0 )) ⊆ 𝐵)
114110, 113eqsstrrd 4034 . . . 4 (𝜑 → ran (𝐹 ∖ (V × { 0 })) ⊆ 𝐵)
115 2ndrn 8064 . . . . 5 ((Rel (𝐹 ∖ (V × { 0 })) ∧ 𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → (2nd𝑧) ∈ ran (𝐹 ∖ (V × { 0 })))
11627, 115sylan 580 . . . 4 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → (2nd𝑧) ∈ ran (𝐹 ∖ (V × { 0 })))
117 relcnv 6124 . . . . . . . 8 Rel 𝐹
118 reldif 5827 . . . . . . . 8 (Rel 𝐹 → Rel (𝐹 ∖ ({ 0 } × V)))
119117, 118mp1i 13 . . . . . . 7 (𝜑 → Rel (𝐹 ∖ ({ 0 } × V)))
120 1st2nd 8062 . . . . . . 7 ((Rel (𝐹 ∖ ({ 0 } × V)) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) → 𝑡 = ⟨(1st𝑡), (2nd𝑡)⟩)
121119, 120sylan 580 . . . . . 6 ((𝜑𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) → 𝑡 = ⟨(1st𝑡), (2nd𝑡)⟩)
122 cnvdif 6165 . . . . . . . . . 10 (𝐹 ∖ (V × { 0 })) = (𝐹(V × { 0 }))
123 cnvxp 6178 . . . . . . . . . . 11 (V × { 0 }) = ({ 0 } × V)
124123difeq2i 4132 . . . . . . . . . 10 (𝐹(V × { 0 })) = (𝐹 ∖ ({ 0 } × V))
125122, 124eqtri 2762 . . . . . . . . 9 (𝐹 ∖ (V × { 0 })) = (𝐹 ∖ ({ 0 } × V))
126125eqimss2i 4056 . . . . . . . 8 (𝐹 ∖ ({ 0 } × V)) ⊆ (𝐹 ∖ (V × { 0 }))
127126a1i 11 . . . . . . 7 (𝜑 → (𝐹 ∖ ({ 0 } × V)) ⊆ (𝐹 ∖ (V × { 0 })))
128127sselda 3994 . . . . . 6 ((𝜑𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) → 𝑡(𝐹 ∖ (V × { 0 })))
129121, 128eqeltrrd 2839 . . . . 5 ((𝜑𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) → ⟨(1st𝑡), (2nd𝑡)⟩ ∈ (𝐹 ∖ (V × { 0 })))
130105, 104opelcnv 5894 . . . . 5 (⟨(1st𝑡), (2nd𝑡)⟩ ∈ (𝐹 ∖ (V × { 0 })) ↔ ⟨(2nd𝑡), (1st𝑡)⟩ ∈ (𝐹 ∖ (V × { 0 })))
131129, 130sylib 218 . . . 4 ((𝜑𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) → ⟨(2nd𝑡), (1st𝑡)⟩ ∈ (𝐹 ∖ (V × { 0 })))
13227adantr 480 . . . . . . . 8 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → Rel (𝐹 ∖ (V × { 0 })))
133 eqidd 2735 . . . . . . . 8 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → {𝑧} = {𝑧})
134 cnvf1olem 8133 . . . . . . . . 9 ((Rel (𝐹 ∖ (V × { 0 })) ∧ (𝑧 ∈ (𝐹 ∖ (V × { 0 })) ∧ {𝑧} = {𝑧})) → ( {𝑧} ∈ (𝐹 ∖ (V × { 0 })) ∧ 𝑧 = { {𝑧}}))
135134simpld 494 . . . . . . . 8 ((Rel (𝐹 ∖ (V × { 0 })) ∧ (𝑧 ∈ (𝐹 ∖ (V × { 0 })) ∧ {𝑧} = {𝑧})) → {𝑧} ∈ (𝐹 ∖ (V × { 0 })))
136132, 96, 133, 135syl12anc 837 . . . . . . 7 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → {𝑧} ∈ (𝐹 ∖ (V × { 0 })))
137136, 125eleqtrdi 2848 . . . . . 6 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → {𝑧} ∈ (𝐹 ∖ ({ 0 } × V)))
138 eqeq2 2746 . . . . . . . . 9 (𝑢 = {𝑧} → (𝑡 = 𝑢𝑡 = {𝑧}))
139138bibi2d 342 . . . . . . . 8 (𝑢 = {𝑧} → ((𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩ ↔ 𝑡 = 𝑢) ↔ (𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩ ↔ 𝑡 = {𝑧})))
140139ralbidv 3175 . . . . . . 7 (𝑢 = {𝑧} → (∀𝑡 ∈ (𝐹 ∖ ({ 0 } × V))(𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩ ↔ 𝑡 = 𝑢) ↔ ∀𝑡 ∈ (𝐹 ∖ ({ 0 } × V))(𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩ ↔ 𝑡 = {𝑧})))
141140adantl 481 . . . . . 6 (((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑢 = {𝑧}) → (∀𝑡 ∈ (𝐹 ∖ ({ 0 } × V))(𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩ ↔ 𝑡 = 𝑢) ↔ ∀𝑡 ∈ (𝐹 ∖ ({ 0 } × V))(𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩ ↔ 𝑡 = {𝑧})))
142117, 118mp1i 13 . . . . . . . . 9 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩) → Rel (𝐹 ∖ ({ 0 } × V)))
143 simplr 769 . . . . . . . . 9 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩) → 𝑡 ∈ (𝐹 ∖ ({ 0 } × V)))
144 simpr 484 . . . . . . . . . 10 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩) → 𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩)
145 df-rel 5695 . . . . . . . . . . . . . 14 (Rel (𝐹 ∖ ({ 0 } × V)) ↔ (𝐹 ∖ ({ 0 } × V)) ⊆ (V × V))
146119, 145sylib 218 . . . . . . . . . . . . 13 (𝜑 → (𝐹 ∖ ({ 0 } × V)) ⊆ (V × V))
147146ad3antrrr 730 . . . . . . . . . . . 12 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩) → (𝐹 ∖ ({ 0 } × V)) ⊆ (V × V))
148147, 143sseldd 3995 . . . . . . . . . . 11 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩) → 𝑡 ∈ (V × V))
149 2nd1st 8061 . . . . . . . . . . 11 (𝑡 ∈ (V × V) → {𝑡} = ⟨(2nd𝑡), (1st𝑡)⟩)
150148, 149syl 17 . . . . . . . . . 10 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩) → {𝑡} = ⟨(2nd𝑡), (1st𝑡)⟩)
151144, 150eqtr4d 2777 . . . . . . . . 9 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩) → 𝑧 = {𝑡})
152 cnvf1olem 8133 . . . . . . . . . 10 ((Rel (𝐹 ∖ ({ 0 } × V)) ∧ (𝑡 ∈ (𝐹 ∖ ({ 0 } × V)) ∧ 𝑧 = {𝑡})) → (𝑧(𝐹 ∖ ({ 0 } × V)) ∧ 𝑡 = {𝑧}))
153152simprd 495 . . . . . . . . 9 ((Rel (𝐹 ∖ ({ 0 } × V)) ∧ (𝑡 ∈ (𝐹 ∖ ({ 0 } × V)) ∧ 𝑧 = {𝑡})) → 𝑡 = {𝑧})
154142, 143, 151, 153syl12anc 837 . . . . . . . 8 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩) → 𝑡 = {𝑧})
15527ad3antrrr 730 . . . . . . . . . 10 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑡 = {𝑧}) → Rel (𝐹 ∖ (V × { 0 })))
15696ad2antrr 726 . . . . . . . . . 10 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑡 = {𝑧}) → 𝑧 ∈ (𝐹 ∖ (V × { 0 })))
157 simpr 484 . . . . . . . . . 10 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑡 = {𝑧}) → 𝑡 = {𝑧})
158 cnvf1olem 8133 . . . . . . . . . . 11 ((Rel (𝐹 ∖ (V × { 0 })) ∧ (𝑧 ∈ (𝐹 ∖ (V × { 0 })) ∧ 𝑡 = {𝑧})) → (𝑡(𝐹 ∖ (V × { 0 })) ∧ 𝑧 = {𝑡}))
159158simprd 495 . . . . . . . . . 10 ((Rel (𝐹 ∖ (V × { 0 })) ∧ (𝑧 ∈ (𝐹 ∖ (V × { 0 })) ∧ 𝑡 = {𝑧})) → 𝑧 = {𝑡})
160155, 156, 157, 159syl12anc 837 . . . . . . . . 9 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑡 = {𝑧}) → 𝑧 = {𝑡})
161146ad3antrrr 730 . . . . . . . . . . 11 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑡 = {𝑧}) → (𝐹 ∖ ({ 0 } × V)) ⊆ (V × V))
162 simplr 769 . . . . . . . . . . 11 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑡 = {𝑧}) → 𝑡 ∈ (𝐹 ∖ ({ 0 } × V)))
163161, 162sseldd 3995 . . . . . . . . . 10 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑡 = {𝑧}) → 𝑡 ∈ (V × V))
164163, 149syl 17 . . . . . . . . 9 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑡 = {𝑧}) → {𝑡} = ⟨(2nd𝑡), (1st𝑡)⟩)
165160, 164eqtrd 2774 . . . . . . . 8 ((((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) ∧ 𝑡 = {𝑧}) → 𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩)
166154, 165impbida 801 . . . . . . 7 (((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) ∧ 𝑡 ∈ (𝐹 ∖ ({ 0 } × V))) → (𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩ ↔ 𝑡 = {𝑧}))
167166ralrimiva 3143 . . . . . 6 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → ∀𝑡 ∈ (𝐹 ∖ ({ 0 } × V))(𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩ ↔ 𝑡 = {𝑧}))
168137, 141, 167rspcedvd 3623 . . . . 5 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → ∃𝑢 ∈ (𝐹 ∖ ({ 0 } × V))∀𝑡 ∈ (𝐹 ∖ ({ 0 } × V))(𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩ ↔ 𝑡 = 𝑢))
169 reu6 3734 . . . . 5 (∃!𝑡 ∈ (𝐹 ∖ ({ 0 } × V))𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩ ↔ ∃𝑢 ∈ (𝐹 ∖ ({ 0 } × V))∀𝑡 ∈ (𝐹 ∖ ({ 0 } × V))(𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩ ↔ 𝑡 = 𝑢))
170168, 169sylibr 234 . . . 4 ((𝜑𝑧 ∈ (𝐹 ∖ (V × { 0 }))) → ∃!𝑡 ∈ (𝐹 ∖ ({ 0 } × V))𝑧 = ⟨(2nd𝑡), (1st𝑡)⟩)
171103, 6, 7, 106, 8, 109, 114, 116, 131, 170gsummptf1o 19995 . . 3 (𝜑 → (𝐺 Σg (𝑧 ∈ (𝐹 ∖ (V × { 0 })) ↦ (2nd𝑧))) = (𝐺 Σg (𝑡 ∈ (𝐹 ∖ ({ 0 } × V)) ↦ (1st𝑡))))
172 fveq2 6906 . . . . . 6 (𝑡 = 𝑧 → (1st𝑡) = (1st𝑧))
173172cbvmptv 5260 . . . . 5 (𝑡 ∈ (𝐹 ∖ ({ 0 } × V)) ↦ (1st𝑡)) = (𝑧 ∈ (𝐹 ∖ ({ 0 } × V)) ↦ (1st𝑧))
17433cnveqd 5888 . . . . . . 7 (𝜑(𝐹 ↾ (𝐹 supp 0 )) = (𝐹 ∖ (V × { 0 })))
175174, 125eqtr2di 2791 . . . . . 6 (𝜑 → (𝐹 ∖ ({ 0 } × V)) = (𝐹 ↾ (𝐹 supp 0 )))
176175mpteq1d 5242 . . . . 5 (𝜑 → (𝑧 ∈ (𝐹 ∖ ({ 0 } × V)) ↦ (1st𝑧)) = (𝑧(𝐹 ↾ (𝐹 supp 0 )) ↦ (1st𝑧)))
177173, 176eqtrid 2786 . . . 4 (𝜑 → (𝑡 ∈ (𝐹 ∖ ({ 0 } × V)) ↦ (1st𝑡)) = (𝑧(𝐹 ↾ (𝐹 supp 0 )) ↦ (1st𝑧)))
178177oveq2d 7446 . . 3 (𝜑 → (𝐺 Σg (𝑡 ∈ (𝐹 ∖ ({ 0 } × V)) ↦ (1st𝑡))) = (𝐺 Σg (𝑧(𝐹 ↾ (𝐹 supp 0 )) ↦ (1st𝑧))))
179102, 171, 1783eqtrd 2778 . 2 (𝜑 → (𝐺 Σg 𝐹) = (𝐺 Σg (𝑧(𝐹 ↾ (𝐹 supp 0 )) ↦ (1st𝑧))))
180 nfcv 2902 . . 3 𝑦(1st𝑧)
181 nfv 1911 . . 3 𝑥𝜑
182 vex 3481 . . . 4 𝑦 ∈ V
18374, 182op1std 8022 . . 3 (𝑧 = ⟨𝑥, 𝑦⟩ → (1st𝑧) = 𝑥)
184 relcnv 6124 . . . 4 Rel (𝐹 ↾ (𝐹 supp 0 ))
185184a1i 11 . . 3 (𝜑 → Rel (𝐹 ↾ (𝐹 supp 0 )))
186 cnvfi 9214 . . . 4 ((𝐹 ↾ (𝐹 supp 0 )) ∈ Fin → (𝐹 ↾ (𝐹 supp 0 )) ∈ Fin)
187108, 186syl 17 . . 3 (𝜑(𝐹 ↾ (𝐹 supp 0 )) ∈ Fin)
188112adantr 480 . . . 4 ((𝜑𝑧(𝐹 ↾ (𝐹 supp 0 ))) → ran 𝐹𝐵)
189184a1i 11 . . . . . . 7 ((𝜑𝑧(𝐹 ↾ (𝐹 supp 0 ))) → Rel (𝐹 ↾ (𝐹 supp 0 )))
190 simpr 484 . . . . . . 7 ((𝜑𝑧(𝐹 ↾ (𝐹 supp 0 ))) → 𝑧(𝐹 ↾ (𝐹 supp 0 )))
191 1stdm 8063 . . . . . . 7 ((Rel (𝐹 ↾ (𝐹 supp 0 )) ∧ 𝑧(𝐹 ↾ (𝐹 supp 0 ))) → (1st𝑧) ∈ dom (𝐹 ↾ (𝐹 supp 0 )))
192189, 190, 191syl2anc 584 . . . . . 6 ((𝜑𝑧(𝐹 ↾ (𝐹 supp 0 ))) → (1st𝑧) ∈ dom (𝐹 ↾ (𝐹 supp 0 )))
193 df-rn 5699 . . . . . 6 ran (𝐹 ↾ (𝐹 supp 0 )) = dom (𝐹 ↾ (𝐹 supp 0 ))
194192, 193eleqtrrdi 2849 . . . . 5 ((𝜑𝑧(𝐹 ↾ (𝐹 supp 0 ))) → (1st𝑧) ∈ ran (𝐹 ↾ (𝐹 supp 0 )))
195111, 194sselid 3992 . . . 4 ((𝜑𝑧(𝐹 ↾ (𝐹 supp 0 ))) → (1st𝑧) ∈ ran 𝐹)
196188, 195sseldd 3995 . . 3 ((𝜑𝑧(𝐹 ↾ (𝐹 supp 0 ))) → (1st𝑧) ∈ 𝐵)
197180, 181, 6, 183, 185, 187, 8, 196gsummpt2d 33034 . 2 (𝜑 → (𝐺 Σg (𝑧(𝐹 ↾ (𝐹 supp 0 )) ↦ (1st𝑧))) = (𝐺 Σg (𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 )) ↦ (𝐺 Σg (𝑦 ∈ ((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥}) ↦ 𝑥)))))
198 df-ima 5701 . . . . . . 7 (𝐹 “ (𝐹 supp 0 )) = ran (𝐹 ↾ (𝐹 supp 0 ))
199 supppreima 32705 . . . . . . . . 9 ((Fun 𝐹𝐹 ∈ V ∧ 0 ∈ V) → (𝐹 supp 0 ) = (𝐹 “ (ran 𝐹 ∖ { 0 })))
20024, 12, 31, 199syl3anc 1370 . . . . . . . 8 (𝜑 → (𝐹 supp 0 ) = (𝐹 “ (ran 𝐹 ∖ { 0 })))
201200imaeq2d 6079 . . . . . . 7 (𝜑 → (𝐹 “ (𝐹 supp 0 )) = (𝐹 “ (𝐹 “ (ran 𝐹 ∖ { 0 }))))
202198, 201eqtr3id 2788 . . . . . 6 (𝜑 → ran (𝐹 ↾ (𝐹 supp 0 )) = (𝐹 “ (𝐹 “ (ran 𝐹 ∖ { 0 }))))
203 funimacnv 6648 . . . . . . 7 (Fun 𝐹 → (𝐹 “ (𝐹 “ (ran 𝐹 ∖ { 0 }))) = ((ran 𝐹 ∖ { 0 }) ∩ ran 𝐹))
20424, 203syl 17 . . . . . 6 (𝜑 → (𝐹 “ (𝐹 “ (ran 𝐹 ∖ { 0 }))) = ((ran 𝐹 ∖ { 0 }) ∩ ran 𝐹))
205 difssd 4146 . . . . . . 7 (𝜑 → (ran 𝐹 ∖ { 0 }) ⊆ ran 𝐹)
206 dfss2 3980 . . . . . . 7 ((ran 𝐹 ∖ { 0 }) ⊆ ran 𝐹 ↔ ((ran 𝐹 ∖ { 0 }) ∩ ran 𝐹) = (ran 𝐹 ∖ { 0 }))
207205, 206sylib 218 . . . . . 6 (𝜑 → ((ran 𝐹 ∖ { 0 }) ∩ ran 𝐹) = (ran 𝐹 ∖ { 0 }))
208202, 204, 2073eqtrd 2778 . . . . 5 (𝜑 → ran (𝐹 ↾ (𝐹 supp 0 )) = (ran 𝐹 ∖ { 0 }))
209193, 208eqtr3id 2788 . . . 4 (𝜑 → dom (𝐹 ↾ (𝐹 supp 0 )) = (ran 𝐹 ∖ { 0 }))
2108cmnmndd 19836 . . . . . . 7 (𝜑𝐺 ∈ Mnd)
211210adantr 480 . . . . . 6 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → 𝐺 ∈ Mnd)
212108adantr 480 . . . . . . 7 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → (𝐹 ↾ (𝐹 supp 0 )) ∈ Fin)
213 imafi2 32728 . . . . . . 7 ((𝐹 ↾ (𝐹 supp 0 )) ∈ Fin → ((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥}) ∈ Fin)
214212, 186, 2133syl 18 . . . . . 6 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → ((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥}) ∈ Fin)
215193, 113eqsstrrid 4044 . . . . . . 7 (𝜑 → dom (𝐹 ↾ (𝐹 supp 0 )) ⊆ 𝐵)
216215sselda 3994 . . . . . 6 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → 𝑥𝐵)
217 gsumhashmul.x . . . . . . 7 · = (.g𝐺)
2186, 217gsumconst 19966 . . . . . 6 ((𝐺 ∈ Mnd ∧ ((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥}) ∈ Fin ∧ 𝑥𝐵) → (𝐺 Σg (𝑦 ∈ ((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥}) ↦ 𝑥)) = ((♯‘((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥})) · 𝑥))
219211, 214, 216, 218syl3anc 1370 . . . . 5 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → (𝐺 Σg (𝑦 ∈ ((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥}) ↦ 𝑥)) = ((♯‘((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥})) · 𝑥))
220 cnvresima 6251 . . . . . . . 8 ((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥}) = ((𝐹 “ {𝑥}) ∩ (𝐹 supp 0 ))
221209eleq2d 2824 . . . . . . . . . . . . 13 (𝜑 → (𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 )) ↔ 𝑥 ∈ (ran 𝐹 ∖ { 0 })))
222221biimpa 476 . . . . . . . . . . . 12 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → 𝑥 ∈ (ran 𝐹 ∖ { 0 }))
223222snssd 4813 . . . . . . . . . . 11 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → {𝑥} ⊆ (ran 𝐹 ∖ { 0 }))
224 sspreima 7087 . . . . . . . . . . 11 ((Fun 𝐹 ∧ {𝑥} ⊆ (ran 𝐹 ∖ { 0 })) → (𝐹 “ {𝑥}) ⊆ (𝐹 “ (ran 𝐹 ∖ { 0 })))
22524, 223, 224syl2an2r 685 . . . . . . . . . 10 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → (𝐹 “ {𝑥}) ⊆ (𝐹 “ (ran 𝐹 ∖ { 0 })))
226200adantr 480 . . . . . . . . . 10 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → (𝐹 supp 0 ) = (𝐹 “ (ran 𝐹 ∖ { 0 })))
227225, 226sseqtrrd 4036 . . . . . . . . 9 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → (𝐹 “ {𝑥}) ⊆ (𝐹 supp 0 ))
228 dfss2 3980 . . . . . . . . 9 ((𝐹 “ {𝑥}) ⊆ (𝐹 supp 0 ) ↔ ((𝐹 “ {𝑥}) ∩ (𝐹 supp 0 )) = (𝐹 “ {𝑥}))
229227, 228sylib 218 . . . . . . . 8 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → ((𝐹 “ {𝑥}) ∩ (𝐹 supp 0 )) = (𝐹 “ {𝑥}))
230220, 229eqtr2id 2787 . . . . . . 7 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → (𝐹 “ {𝑥}) = ((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥}))
231230fveq2d 6910 . . . . . 6 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → (♯‘(𝐹 “ {𝑥})) = (♯‘((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥})))
232231oveq1d 7445 . . . . 5 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → ((♯‘(𝐹 “ {𝑥})) · 𝑥) = ((♯‘((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥})) · 𝑥))
233219, 232eqtr4d 2777 . . . 4 ((𝜑𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 ))) → (𝐺 Σg (𝑦 ∈ ((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥}) ↦ 𝑥)) = ((♯‘(𝐹 “ {𝑥})) · 𝑥))
234209, 233mpteq12dva 5236 . . 3 (𝜑 → (𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 )) ↦ (𝐺 Σg (𝑦 ∈ ((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥}) ↦ 𝑥))) = (𝑥 ∈ (ran 𝐹 ∖ { 0 }) ↦ ((♯‘(𝐹 “ {𝑥})) · 𝑥)))
235234oveq2d 7446 . 2 (𝜑 → (𝐺 Σg (𝑥 ∈ dom (𝐹 ↾ (𝐹 supp 0 )) ↦ (𝐺 Σg (𝑦 ∈ ((𝐹 ↾ (𝐹 supp 0 )) “ {𝑥}) ↦ 𝑥)))) = (𝐺 Σg (𝑥 ∈ (ran 𝐹 ∖ { 0 }) ↦ ((♯‘(𝐹 “ {𝑥})) · 𝑥))))
236179, 197, 2353eqtrd 2778 1 (𝜑 → (𝐺 Σg 𝐹) = (𝐺 Σg (𝑥 ∈ (ran 𝐹 ∖ { 0 }) ↦ ((♯‘(𝐹 “ {𝑥})) · 𝑥))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206  wa 395   = wceq 1536  wex 1775  wcel 2105  wral 3058  wrex 3067  ∃!wreu 3375  Vcvv 3477  cdif 3959  cin 3961  wss 3962  {csn 4630  cop 4636   cuni 4911   class class class wbr 5147  cmpt 5230   × cxp 5686  ccnv 5687  dom cdm 5688  ran crn 5689  cres 5690  cima 5691  Rel wrel 5693  Fun wfun 6556   Fn wfn 6557  wf 6558  cfv 6562  (class class class)co 7430  1st c1st 8010  2nd c2nd 8011   supp csupp 8183  Fincfn 8983   finSupp cfsupp 9398  chash 14365  Basecbs 17244  0gc0g 17485   Σg cgsu 17486  Mndcmnd 18759  .gcmg 19097  CMndccmn 19812
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1791  ax-4 1805  ax-5 1907  ax-6 1964  ax-7 2004  ax-8 2107  ax-9 2115  ax-10 2138  ax-11 2154  ax-12 2174  ax-ext 2705  ax-rep 5284  ax-sep 5301  ax-nul 5311  ax-pow 5370  ax-pr 5437  ax-un 7753  ax-cnex 11208  ax-resscn 11209  ax-1cn 11210  ax-icn 11211  ax-addcl 11212  ax-addrcl 11213  ax-mulcl 11214  ax-mulrcl 11215  ax-mulcom 11216  ax-addass 11217  ax-mulass 11218  ax-distr 11219  ax-i2m1 11220  ax-1ne0 11221  ax-1rid 11222  ax-rnegex 11223  ax-rrecex 11224  ax-cnre 11225  ax-pre-lttri 11226  ax-pre-lttrn 11227  ax-pre-ltadd 11228  ax-pre-mulgt0 11229
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1539  df-fal 1549  df-ex 1776  df-nf 1780  df-sb 2062  df-mo 2537  df-eu 2566  df-clab 2712  df-cleq 2726  df-clel 2813  df-nfc 2889  df-ne 2938  df-nel 3044  df-ral 3059  df-rex 3068  df-rmo 3377  df-reu 3378  df-rab 3433  df-v 3479  df-sbc 3791  df-csb 3908  df-dif 3965  df-un 3967  df-in 3969  df-ss 3979  df-pss 3982  df-nul 4339  df-if 4531  df-pw 4606  df-sn 4631  df-pr 4633  df-op 4637  df-uni 4912  df-int 4951  df-iun 4997  df-iin 4998  df-br 5148  df-opab 5210  df-mpt 5231  df-tr 5265  df-id 5582  df-eprel 5588  df-po 5596  df-so 5597  df-fr 5640  df-se 5641  df-we 5642  df-xp 5694  df-rel 5695  df-cnv 5696  df-co 5697  df-dm 5698  df-rn 5699  df-res 5700  df-ima 5701  df-pred 6322  df-ord 6388  df-on 6389  df-lim 6390  df-suc 6391  df-iota 6515  df-fun 6564  df-fn 6565  df-f 6566  df-f1 6567  df-fo 6568  df-f1o 6569  df-fv 6570  df-isom 6571  df-riota 7387  df-ov 7433  df-oprab 7434  df-mpo 7435  df-of 7696  df-om 7887  df-1st 8012  df-2nd 8013  df-supp 8184  df-frecs 8304  df-wrecs 8335  df-recs 8409  df-rdg 8448  df-1o 8504  df-2o 8505  df-er 8743  df-en 8984  df-dom 8985  df-sdom 8986  df-fin 8987  df-fsupp 9399  df-oi 9547  df-card 9976  df-pnf 11294  df-mnf 11295  df-xr 11296  df-ltxr 11297  df-le 11298  df-sub 11491  df-neg 11492  df-nn 12264  df-2 12326  df-n0 12524  df-z 12611  df-uz 12876  df-fz 13544  df-fzo 13691  df-seq 14039  df-hash 14366  df-sets 17197  df-slot 17215  df-ndx 17227  df-base 17245  df-ress 17274  df-plusg 17310  df-0g 17487  df-gsum 17488  df-mre 17630  df-mrc 17631  df-acs 17633  df-mgm 18665  df-sgrp 18744  df-mnd 18760  df-submnd 18809  df-mulg 19098  df-cntz 19347  df-cmn 19814
This theorem is referenced by:  elrspunidl  33435
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